665 lines
12 KiB
Plaintext
665 lines
12 KiB
Plaintext
(defMathConstants 'mconst)
|
|
mfgGrid = 100.0
|
|
debug = nil
|
|
|
|
; SNAPS STUFF TO GRID
|
|
; uses global mfgGrid to do so, which gets redefined in generator
|
|
; to the tech mfg grid using the techFile
|
|
(defun snap (p)
|
|
floor(p*mfgGrid)/mfgGrid
|
|
)
|
|
|
|
; DEBUG output function, uncomment to get all output
|
|
(procedure output( @rest args)
|
|
(when debug (apply 'printf args))
|
|
)
|
|
|
|
; VECTOR HELPER FUNCTIONS
|
|
; add a vector vect to a point p
|
|
(defun addVect (p vect)
|
|
(car(p)+car(vect)):(cadr(p)+cadr(vect))
|
|
)
|
|
; multiplies a vector vect with a scalar
|
|
(defun multVect (vect scalar)
|
|
(car(vect)*scalar):(cadr(vect)*scalar)
|
|
)
|
|
; multiplies a vector vect with -1 (inverse)
|
|
(defun invVect (vect)
|
|
(multVect vect -1)
|
|
)
|
|
; subtracts two vectors from one another
|
|
; (does vect2 - vect1)
|
|
(defun subVect (vect1 vect2)
|
|
(car(vect2)-car(vect1)):(cadr(vect2)-cadr(vect1))
|
|
)
|
|
; returns length of a vector
|
|
(defun lenVect (vect)
|
|
sqrt((1.0*car(vect)**2)+(1.0*cadr(vect)**2))
|
|
)
|
|
; rotates a vector vect by 90 CCW
|
|
(defun rotVect (vect)
|
|
cadr(vect):-car(vect)
|
|
)
|
|
; normalizes a vector vect by its length
|
|
(defun normalizeVect (vect)
|
|
(multVect vect 1.0/(lenVect vect))
|
|
)
|
|
|
|
; multiplies a point p with a 2x2 matrix m
|
|
(defun matmult (m p)
|
|
result = list()
|
|
|
|
for(j 1 2
|
|
temp = 0
|
|
for(i 1 2
|
|
a = nthelem(j nthelem(i m))
|
|
b = nthelem(i p)
|
|
temp += a*b
|
|
)
|
|
result = append(result list(temp))
|
|
)
|
|
|
|
result
|
|
)
|
|
|
|
; Tests if a float x is zero in respect to the manufacturing grid
|
|
; (smaller then one grid spacing)
|
|
(defun ind_isZero (x)
|
|
abs(x)<1/mfgGrid
|
|
)
|
|
|
|
; return the sign of the input
|
|
; (ind_sign 20) = 1
|
|
; (ind_sign -10) = -1
|
|
; (ind_sign 0) = 0
|
|
(defun ind_sign (x)
|
|
(if ind_isZero(x)
|
|
then 0
|
|
else
|
|
(if (x > 0)
|
|
then 1
|
|
else -1
|
|
)
|
|
)
|
|
)
|
|
; only returns vectors with their sign as components
|
|
; e.g. (cleanupDirVect 0.1:-20) == 1:-1
|
|
(defun cleanDirVect (vect)
|
|
(ind_sign car(vect)):(ind_sign cadr(vect))
|
|
))
|
|
|
|
|
|
; DRAWING HELPER FUNCTIONS
|
|
; creates a pin using database functions
|
|
; and a corresponding net with name name
|
|
; does so on the layer layer
|
|
(defun ind_createPin (id name points layer)
|
|
(leCreatePin
|
|
id
|
|
layer
|
|
"polygon"
|
|
points
|
|
name
|
|
"inputOutput"
|
|
'("none")
|
|
)
|
|
|
|
/*
|
|
net = dbCreateNet(id name)
|
|
fig = dbCreatePolygon(id layer points)
|
|
trm = dbCreateTerm(net name "inputOutput")
|
|
pin = dbCreatePin(net fig name trm)
|
|
pin~>accessDir = '( "none" )
|
|
*/
|
|
|
|
lab = dbCreateLabel(id '("TEXT") cadr(points) name "centerLeft" "R0" "roman" 3)
|
|
|
|
;output("created pin %s\n", name)
|
|
)
|
|
|
|
; Creates the end connection for the inductor and
|
|
; places a pin there
|
|
; TODO: create underpass here
|
|
(defun ind_createEnd (id start w dir)
|
|
(output "[createEnd] start=%P dir=%P\n", start, dir)
|
|
(let
|
|
(center points left right up viaDef)
|
|
viaDef = (techFindViaDefByName (techGetTechFile id) "TM2_TM1")
|
|
center = (addVect start (multVect dir (snap -w/2)))
|
|
left = (addVect center (multVect dir (snap -w/2)))
|
|
right = (addVect center (multVect dir (snap w/2)))
|
|
up = (multVect (rotVect dir) (snap w/2))
|
|
|
|
points = list(
|
|
(addVect left up)
|
|
(addVect right up)
|
|
(addVect right (invVect up))
|
|
(addVect left (invVect up))
|
|
)
|
|
|
|
/*(dbCreateVia
|
|
id
|
|
viaDef
|
|
(addVect center (multVect dir -w))
|
|
"R0"
|
|
list(
|
|
list("cutWidth" (snap w-0.6))
|
|
list("cutHeight" (snap w-0.6))
|
|
)
|
|
)*/
|
|
|
|
; create underpass
|
|
/*(dbCreatePathSeg
|
|
id
|
|
underpassLayer
|
|
(addVect center (multVect dir -w))
|
|
(addVect (addVect center (multVect dir -w)) (multVect up -20))
|
|
w*2
|
|
"extend"
|
|
"extend"
|
|
)*/
|
|
|
|
/*(ind_createPin
|
|
id
|
|
"inner"
|
|
points
|
|
list("TopMetal2" "drawing")
|
|
)*/
|
|
)
|
|
)
|
|
|
|
; Creates the start of the inductor
|
|
; and places a pin there
|
|
(defun ind_createStart (id start width dir)
|
|
(let (center points)
|
|
center = start; (addVect start multVect((invVect dir) width/2))
|
|
|
|
points = list(
|
|
(addVect center (-width):width)
|
|
(addVect center width:width)
|
|
(addVect center width:(-width))
|
|
(addVect center (-width):(-width))
|
|
)
|
|
(ind_createPin
|
|
id
|
|
"outer"
|
|
points
|
|
list("TopMetal2" "drawing")
|
|
)
|
|
)
|
|
)
|
|
|
|
; creates one segment of the inductor and calls itself recursively to complete
|
|
; one inductor
|
|
(defun ind_drawSegment (id n seg start r)
|
|
dx = snap(r*talpha)
|
|
|
|
(case mod(seg, 8)
|
|
(0
|
|
end = dx:r
|
|
)
|
|
(1
|
|
end = r:dx
|
|
)
|
|
(2
|
|
end = r:-dx
|
|
)
|
|
(3
|
|
end = dx:-r
|
|
)
|
|
(4
|
|
end = -dx:-r
|
|
)
|
|
(5
|
|
end = -r:-dx
|
|
)
|
|
(6
|
|
end = -r:dx
|
|
)
|
|
(7
|
|
r -= pitch
|
|
end = (addVect start (r-dx):(r-dx))
|
|
)
|
|
)
|
|
|
|
dir = (subVect start end)
|
|
ndir = (normalizeVect dir)
|
|
|
|
isstart = (seg == 0)
|
|
isend = (n < 1)
|
|
|
|
; DEBUG
|
|
(output "seg: %d, n: %L (start: %L, end: %L)\n", mod(seg, nseg), n, isstart, isend)
|
|
|
|
when(isend
|
|
l = (lenVect dir)
|
|
|
|
if((mod(seg,2)==0)
|
|
then
|
|
end = addVect(end multVect(ndir (snap l*(n-1))))
|
|
else
|
|
end = addVect(start multVect(ndir (snap l*(n-1))))
|
|
)
|
|
)
|
|
|
|
if((mod(seg, 2) == 0)
|
|
then
|
|
(dbCreatePathSeg
|
|
id
|
|
inductorLayer
|
|
start
|
|
end
|
|
w
|
|
if(!isstart then "custom" else "extend")
|
|
if(!isend then "custom" else "truncate")
|
|
list(if(isstart then 0 else whalv) if(isend then 0 else whalv) list(w2halv w2halv whalv w2halv w2halv whalv))
|
|
)
|
|
else
|
|
(dbCreatePathSeg
|
|
id
|
|
inductorLayer
|
|
start
|
|
end
|
|
w2
|
|
"truncate"
|
|
"truncate"
|
|
)
|
|
)
|
|
|
|
; FIXME: broken, and underpass is not generated anyway
|
|
;when(isstart ind_createStart(id start whalv ndir))
|
|
;when((n<=1) ind_createEnd(id end whalv ndir))
|
|
|
|
when((and (not non_of_that_ihp_rubbish) isstart)
|
|
(dbCreateRect
|
|
id
|
|
'("IND" "drawing")
|
|
list(-whalv:(r+whalv) whalv:(r-whalv))
|
|
)
|
|
(dbCreateLabel
|
|
id
|
|
'("TEXT" "drawing")
|
|
0:r
|
|
"L2_TM2"
|
|
"centerCenter"
|
|
"R0"
|
|
"roman"
|
|
whalv
|
|
)
|
|
)
|
|
n -= 1
|
|
(output "n=%L\n", n)
|
|
|
|
(when (n > 0)
|
|
(ind_drawSegment id n seg+1 end r)
|
|
) ; when
|
|
)
|
|
|
|
|
|
(defun ind_drawOctagon (r w1 w2 layer shorting)
|
|
(let (a b start end)
|
|
; define start
|
|
a = (snap r*tanalpha)
|
|
; a = (floor r*tanalpha*mfgGrid)/(0.25*mfgGrid)
|
|
b = (snap r)
|
|
|
|
start = 0:0
|
|
end = 0:0
|
|
|
|
(for n 0 8
|
|
(let (w)
|
|
w = (if mod(n 2)==1 then w2 else w1)
|
|
|
|
(case n
|
|
(0
|
|
start = -a:b
|
|
end = a:b
|
|
)
|
|
(1
|
|
start = b:-a
|
|
end = a:-b
|
|
)
|
|
(2
|
|
start = b:-a
|
|
end = b:a
|
|
)
|
|
(3
|
|
start = a:b
|
|
end = b:a
|
|
)
|
|
(4
|
|
start = a:-b
|
|
end = -a:-b
|
|
)
|
|
(5
|
|
start = -a:-b
|
|
end = -b:-a
|
|
)
|
|
(6
|
|
start = -b:-a
|
|
end = -b:a
|
|
)
|
|
(7
|
|
start = -b:a
|
|
end = (addVect -a:b -shorting:-shorting)
|
|
)
|
|
)
|
|
|
|
; draw ring segment
|
|
(apply 'dbCreatePathSeg
|
|
id
|
|
gndshield_layer
|
|
start
|
|
end
|
|
w
|
|
if(mod(n 2)==0
|
|
then list(
|
|
"truncate"
|
|
"truncate"
|
|
list(0 0)
|
|
)
|
|
else list(
|
|
"custom"
|
|
(if n==7 then "truncate" else "custom")
|
|
list(
|
|
w1/2
|
|
(if n==7 then 0 else w1/2)
|
|
list(w1/2 w1/2 w2/2 w1/2 w1/2 w2/2)
|
|
)
|
|
)
|
|
)
|
|
) ; END apply
|
|
) ; END let
|
|
) ; END for
|
|
)
|
|
)
|
|
|
|
(defun ind_gndshield2 (yr)
|
|
(let (a l)
|
|
a = min((yr*m + gap) r)
|
|
l = (r-a)
|
|
|
|
when(l>0
|
|
; DEBUG
|
|
(output "(r=%L, m=%L, w=%L) yr=%L, a=%L, length=%L\n" m r w yr a l)
|
|
|
|
(when ((mod n 2) == 1)
|
|
l /= sqrt(2)
|
|
)
|
|
|
|
l = (snap l)
|
|
|
|
dir = (cleanDirVect matmult(rotmat 0:-1))
|
|
|
|
start = matmult(rotmat yr:r)
|
|
; start = (snap (car start)):(snap (cadr start))
|
|
start = (floor((car start)*50.0)/50.0):(floor((cadr start)*50.0)/50.0)
|
|
end = (addVect start (multVect dir l))
|
|
|
|
; DEBUG
|
|
(output "start=%P, end=%P (dir=%P)\n" start end dir)
|
|
|
|
(dbCreatePathSeg
|
|
id
|
|
gndshield_layer
|
|
start
|
|
end
|
|
w
|
|
"truncate"
|
|
"truncate"
|
|
)
|
|
|
|
when(yr != 0
|
|
; DEBUG
|
|
(output "create mirror at y=%L\n" -yr)
|
|
start = -car(start):cadr(start)
|
|
end = -car(end):cadr(end)
|
|
|
|
dbCreatePathSeg(
|
|
id
|
|
gndshield_layer
|
|
start
|
|
end
|
|
w
|
|
"truncate"
|
|
"truncate"
|
|
)
|
|
)
|
|
|
|
(ind_gndshield2 yr+pitch)
|
|
) ; END when
|
|
) ; END let
|
|
)
|
|
|
|
(defun ind_gndshield (r w1 w2 pitch gap window)
|
|
(let (n w)
|
|
for(n 0 nseg-1
|
|
; DEBUG
|
|
angle = mconst.PI*2/nseg * n
|
|
rotmat = list(
|
|
list(cos(angle) -sin(angle))
|
|
list(sin(angle) cos(angle))
|
|
)
|
|
|
|
w = if((mod n 2)==1 then w2 else w1)
|
|
|
|
(output "draw a gndshield part with w=%L\n" w)
|
|
(ind_gndshield2 0)
|
|
) ; END for
|
|
)
|
|
)
|
|
|
|
; uses ind_drawSegment to create a complete inductor with
|
|
; the given specification
|
|
defun(drawInductor (n r width pitch)
|
|
(let (id w whalv w2 w2halv ahalv talpha hl nseg)
|
|
; the PCell cell view id
|
|
id = pcCellView
|
|
|
|
(when (not id)
|
|
(error "could not find cell view")
|
|
) ; when
|
|
|
|
|
|
; set multiple globals
|
|
inductorLayer = '("TopMetal2", "drawing")
|
|
underpassLayer = '("TopMetal1", "drawing")
|
|
output("generating inductor with r=%L, turns=%L, pitch=%L and width=%L\n" r n pitch width)
|
|
|
|
whalv = snap(width/2)
|
|
w = whalv*2
|
|
; diagonal segment width
|
|
w2halv = snap(width*sqrt(2)/2)
|
|
w2 = 2*w2halv
|
|
|
|
pitch = snap(pitch + w) ; pitch from segment sides
|
|
r = snap(r - whalv) ; middle radius
|
|
nseg = 8 ; octagonal inductor
|
|
|
|
; calculation globals
|
|
ahalv = mconst.PI/nseg ; angle between segments
|
|
talpha = tan(ahalv)
|
|
hl = snap((r-w/2)*talpha) ; start point
|
|
|
|
; draw inductor
|
|
(let (dir)
|
|
(ind_drawSegment id n*nseg 0 -hl:r r)
|
|
)
|
|
)
|
|
)
|
|
|
|
(defun drawGndShield (r layer pitch width window)
|
|
; setup gndshield
|
|
(let (id gndshield_layer nseg dir tanalpha m w1 w2 ymax)
|
|
r -= (snap width/2)
|
|
w1 = (snap width*1.0)
|
|
w2 = (snap width*1.0*sqrt(2))
|
|
|
|
id = pcCellView
|
|
gndshield_layer = layer
|
|
nseg = 8
|
|
tanalpha = tan(mconst.PI/nseg)
|
|
|
|
segw = r/2.0*tanalpha
|
|
pitch += width
|
|
m = 1/tanalpha
|
|
ymax = floor(segw/(2*pitch))
|
|
|
|
(output "draw gnd shield with nfins=%L, r=%L, segw=%L, segcount=%L and w=%L on %L\n" ymax r segw (floor segw/(2*pitch)) width gndshield_layer)
|
|
|
|
; draw the gndshield itself
|
|
(ind_gndshield r w1 w2 pitch width*2 (snap window))
|
|
|
|
; draw contact ring
|
|
(ind_drawOctagon r w1 w2 gndshield_layer window)
|
|
)
|
|
)
|
|
|
|
|
|
(defun ind_getOctagonPoints (r w1 w2 shorting)
|
|
(let (a b start end)
|
|
; define start
|
|
a = (floor r*tan(mconst.PI/8)*mfgGrid*0.5)/(0.5*mfgGrid)
|
|
b = (snap r)
|
|
|
|
start = 0:0
|
|
end = 0:0
|
|
result=list()
|
|
|
|
(for n 0 8
|
|
(let (w)
|
|
w = (if mod(n 2)==1 then w2 else w1)
|
|
|
|
(case n
|
|
(0
|
|
start = -a:b
|
|
end = a:b
|
|
)
|
|
(1
|
|
start = a:b
|
|
end = b:a
|
|
)
|
|
(2
|
|
start = b:a
|
|
end = b:-a
|
|
)
|
|
(3
|
|
start = b:-a
|
|
end = a:-b
|
|
)
|
|
(4
|
|
start = a:-b
|
|
end = -a:-b
|
|
)
|
|
(5
|
|
start = -a:-b
|
|
end = -b:-a
|
|
)
|
|
(6
|
|
start = -b:-a
|
|
end = -b:a
|
|
)
|
|
(7
|
|
start = -b:a
|
|
end = (addVect -a:b -shorting:-shorting)
|
|
)
|
|
)
|
|
result=(append result list(list(start end w)))
|
|
)
|
|
)
|
|
)
|
|
result
|
|
)
|
|
|
|
(defun ind_segmentsToPolygon (seg)
|
|
(output "segments=%L\n" seg)
|
|
result = list(caar(seg))
|
|
seg = cdr(seg)
|
|
|
|
(when seg
|
|
result = (append result (ind_segmentsToPolygon seg))
|
|
)
|
|
result
|
|
)
|
|
|
|
(defun drawBlockLayer (points layers)
|
|
(let (layer)
|
|
layer = car(layers)
|
|
layers = cdr(layers)
|
|
|
|
; DEBUG
|
|
(output "draw block layer %L\n", layer)
|
|
|
|
(dbCreatePolygon
|
|
pcCellView
|
|
layer
|
|
points
|
|
)
|
|
|
|
(when layers
|
|
(drawBlockLayer points layers)
|
|
)
|
|
)
|
|
)
|
|
|
|
(defun drawBlockLayers (r layers)
|
|
points = (ind_segmentsToPolygon (ind_getOctagonPoints r 0 0 0))
|
|
(output "polygon points %L\n", points)
|
|
(drawBlockLayer points layers)
|
|
)
|
|
|
|
(defun setup ()
|
|
; get manufacturing grid spacing and set global accordingly
|
|
mfgGrid=1/techGetMfgGridResolution(techGetTechFile(pcCellView))
|
|
(output "using manufacturing grid of %L\n", mfgGrid)
|
|
)
|
|
|
|
; defines the inductor PCell
|
|
(pcDefinePCell
|
|
list( (ddGetObj "mmic14_inductors") "inductorPcell" "layout")
|
|
list(
|
|
( turns "float" 1.0 )
|
|
( radius "float" 100.0 )
|
|
( width "float" 2.1 )
|
|
( pitch "float" 2.1 )
|
|
; gndshield parameters
|
|
( gndshield "boolean" nil )
|
|
( gndpitch "float" 2.1 )
|
|
( gndwidth "float" 2.1 )
|
|
( gndoverlap "float" 3 )
|
|
( gndwindow "float" 2.1 )
|
|
; layer setup
|
|
( blockLayers "ilList" '(
|
|
("Metal1" "nofill")
|
|
("Metal2" "nofill")
|
|
("Metal3" "nofill")
|
|
("TopMetal1" "nofill")
|
|
("TopMetal2" "nofill")
|
|
("GatPoly" "nofill")
|
|
("Activ" "nofill")
|
|
("PWell" "block")
|
|
("NoRCX" "drawing")
|
|
)
|
|
)
|
|
( gndShieldLayer "ilList" '("Metal1" "drawing"))
|
|
( non_of_that_ihp_rubbish "boolean" nil)
|
|
)
|
|
(let
|
|
()
|
|
(setup)
|
|
(drawInductor turns radius width pitch)
|
|
(when gndshield
|
|
(drawGndShield radius+gndoverlap gndShieldLayer gndwidth gndpitch gndwindow)
|
|
)
|
|
|
|
(when (not non_of_that_ihp_rubbish)
|
|
(when blockLayers
|
|
(drawBlockLayers radius+gndoverlap blockLayers)
|
|
)
|
|
|
|
)
|
|
)
|
|
)
|
|
|
|
|